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Immobilization in Ceramic Waste Forms of the Residues From Treatment of Mixed Wastes

Published online by Cambridge University Press:  25 February 2011

V. M. Oversby ,
R. A. Van Konynenburg ,
W. E. Glassley  and
P. G. Curtis
V. M. Oversby
Affiliation:
Lawrence Livermore National Lab, Livermore, CA, 94550.
R. A. Van Konynenburg
Affiliation:
Lawrence Livermore National Lab, Livermore, CA, 94550.
W. E. Glassley
Affiliation:
Lawrence Livermore National Lab, Livermore, CA, 94550.
P. G. Curtis
Affiliation:
Lawrence Livermore National Lab, Livermore, CA, 94550.
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Abstract

The Environmental Restoration and Waste Management Applied Technology Program at LLNL is developing a Mixed Waste Management Facility to demonstrate treatment technologies that provide an alternative to incineration. As part of that program, we are developing final waste forms using ceramic processing methods for the immobilization of the treatment process residues. The ceramic phase assemblages are based on using Synroc D as a starting point and varying the phase assemblage to accommodate the differences in chemistry between the treatment process residues and the defense waste for which Synroc D was developed. Two basic formulations are used, one for low ash residues resulting from treatment of organic materials contaminated with RCRA metals, and one for high ash residues generated from the treatment of plastics and paper products. Treatment process residues are mixed with ceramic precursor materials, dried, calcined, formed into pellets at room temperature, and sintered at 1150 to 1200°C to produce the final waste form. This paper discusses the chemical composition of the waste streams and waste forms, the phase assemblages that serve as hosts for inorganic waste elements, and the changes in waste form characteristics as a function of variation in process parameters.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 333: Symposium V – Scientific Basis for Nuclear Waste Management XVII , 1993 , 285
Copyright
Copyright © Materials Research Society 1994

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References

REFERENCES

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